Bird respiratory system By Dr. K. Usha Rani DNR.

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Bird respiratory system By Dr. K. Usha Rani DNR. College Respiratory system The avian respiratory system is different from that of other vertebrates Birds having relatively small lungs plus nine air sacs that play an important role in

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01
Bird respiratory system By
Dr. K. Usha Rani
DNR. College<br>
02
Respiratory system The avian respiratory system is different from that of other vertebrates
Birds having relatively small lungs plus nine air sacs that play an important role in respiration
The air sacs permit a unidirectional flow of air through the lungs.<br>
03
Air sacs Air Sacs. Birds have nine air sacs
Two cervical, an unpaired clavicular, two cranial thoracic, two caudal thoracic, and two abdominal air sacs.
The air sacs are thin-walled structures composed of simple squamous epithelium
Covering a thin layer of connective tissue with very few blood vessels<br>